Densification behavior and mechanical properties of cerium oxide and manganese oxide-doped yttria tetragonal Zirconia polycrystals ceramics for dental applications

G. Sankar, Meenaloshini Satgunam, R. Dinesh

Research output: Contribution to journalArticle

Abstract

This research work focuses on the mechanical properties and microstructural behavior of high-purity CeO2 and MnO2-doped Y-TZP. The compositions were varied with different weight percentage i.e from 0.5 to 1.5wt%. The samples were homogenously mixed using wet milling and ball milling operations. Then, the samples were shaped into circular discs and rectangular bars by uniaxial pressing at 200 MPa and then pressure less-sintered at various temperatures between 1250˚C and 1450˚C. 1h holding time was applied before cooling down. The results have shown, that the addition of dopant and sintering temperature has significantly contributed towards the enhancement of the mechanical properties of Y-TZP. The mechanical properties in relation to bulk density, Young’s modulus, Vickers hardness, and flexural were measured. The best mechanical property values for the CeO2 and MnO2-doped Y-TZP ceramics were 5.67 Mgm-3 and 8.46 GPa for density and Vickers hardness, respectively. The best flexural strength and Youngs modulus values obtained from the experiment were ~900 MPa and 210 GPa respectively. These results indicate that the addition of dopants have reinforced the densification parameters and toughened the samples. These results were obtained for the composition of 0.5wt% MnO2 and 0.5wt% CeO2 sintered at 1350˚C.

Original languageEnglish
Pages (from-to)337-341
Number of pages5
JournalInternational Journal of Innovative Technology and Exploring Engineering
Volume8
Issue number7
Publication statusPublished - 01 May 2019

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Manganese oxide
Yttrium oxide
Polycrystals
Cerium
Densification
Zirconia
Mechanical properties
Oxides
Vickers hardness
Elastic moduli
Doping (additives)
Milling (machining)
Ball milling
Chemical analysis
Bending strength
Sintering
Cooling
Temperature
Experiments

All Science Journal Classification (ASJC) codes

  • Computer Science(all)
  • Civil and Structural Engineering
  • Mechanics of Materials
  • Electrical and Electronic Engineering

Cite this

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abstract = "This research work focuses on the mechanical properties and microstructural behavior of high-purity CeO2 and MnO2-doped Y-TZP. The compositions were varied with different weight percentage i.e from 0.5 to 1.5wt{\%}. The samples were homogenously mixed using wet milling and ball milling operations. Then, the samples were shaped into circular discs and rectangular bars by uniaxial pressing at 200 MPa and then pressure less-sintered at various temperatures between 1250˚C and 1450˚C. 1h holding time was applied before cooling down. The results have shown, that the addition of dopant and sintering temperature has significantly contributed towards the enhancement of the mechanical properties of Y-TZP. The mechanical properties in relation to bulk density, Young’s modulus, Vickers hardness, and flexural were measured. The best mechanical property values for the CeO2 and MnO2-doped Y-TZP ceramics were 5.67 Mgm-3 and 8.46 GPa for density and Vickers hardness, respectively. The best flexural strength and Youngs modulus values obtained from the experiment were ~900 MPa and 210 GPa respectively. These results indicate that the addition of dopants have reinforced the densification parameters and toughened the samples. These results were obtained for the composition of 0.5wt{\%} MnO2 and 0.5wt{\%} CeO2 sintered at 1350˚C.",
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AU - Dinesh, R.

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AB - This research work focuses on the mechanical properties and microstructural behavior of high-purity CeO2 and MnO2-doped Y-TZP. The compositions were varied with different weight percentage i.e from 0.5 to 1.5wt%. The samples were homogenously mixed using wet milling and ball milling operations. Then, the samples were shaped into circular discs and rectangular bars by uniaxial pressing at 200 MPa and then pressure less-sintered at various temperatures between 1250˚C and 1450˚C. 1h holding time was applied before cooling down. The results have shown, that the addition of dopant and sintering temperature has significantly contributed towards the enhancement of the mechanical properties of Y-TZP. The mechanical properties in relation to bulk density, Young’s modulus, Vickers hardness, and flexural were measured. The best mechanical property values for the CeO2 and MnO2-doped Y-TZP ceramics were 5.67 Mgm-3 and 8.46 GPa for density and Vickers hardness, respectively. The best flexural strength and Youngs modulus values obtained from the experiment were ~900 MPa and 210 GPa respectively. These results indicate that the addition of dopants have reinforced the densification parameters and toughened the samples. These results were obtained for the composition of 0.5wt% MnO2 and 0.5wt% CeO2 sintered at 1350˚C.

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